Respuesta :
f(x)=x+2
replace f(x) with y
y=x+2
interchange the variables
x = y+2
solve for y
x-2=y
replace y with f^-1(x)
f^-1(x)=x-2
so the answer is b. h(x)=x-2
replace f(x) with y
y=x+2
interchange the variables
x = y+2
solve for y
x-2=y
replace y with f^-1(x)
f^-1(x)=x-2
so the answer is b. h(x)=x-2